math.h revision 1.20
1 /* $NetBSD: math.h,v 1.20 1999/12/23 10:15:05 kleink Exp $ */ 2 3 /* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunPro, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 14 /* 15 * @(#)fdlibm.h 5.1 93/09/24 16 */ 17 18 #ifndef _MATH_H_ 19 #define _MATH_H_ 20 21 #include <sys/featuretest.h> 22 #include <machine/math.h> 23 24 /* 25 * ANSI/POSIX 26 */ 27 extern const char __infinity[]; 28 #define HUGE_VAL (*(const double *)(const void *)__infinity) 29 30 /* 31 * XOPEN/SVID 32 */ 33 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \ 34 defined(_XOPEN_SOURCE) 35 #define M_E 2.7182818284590452354 /* e */ 36 #define M_LOG2E 1.4426950408889634074 /* log 2e */ 37 #define M_LOG10E 0.43429448190325182765 /* log 10e */ 38 #define M_LN2 0.69314718055994530942 /* log e2 */ 39 #define M_LN10 2.30258509299404568402 /* log e10 */ 40 #define M_PI 3.14159265358979323846 /* pi */ 41 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 42 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 43 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 44 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 45 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 46 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 47 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 48 49 #define MAXFLOAT ((float)3.40282346638528860e+38) 50 extern int signgam; 51 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE || _XOPEN_SOURCE */ 52 53 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 54 !defined(_XOPEN_SOURCE) 55 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 56 57 #define _LIB_VERSION_TYPE enum fdversion 58 #define _LIB_VERSION _fdlib_version 59 60 /* if global variable _LIB_VERSION is not desirable, one may 61 * change the following to be a constant by: 62 * #define _LIB_VERSION_TYPE const enum version 63 * In that case, after one initializes the value _LIB_VERSION (see 64 * s_lib_version.c) during compile time, it cannot be modified 65 * in the middle of a program 66 */ 67 extern _LIB_VERSION_TYPE _LIB_VERSION; 68 69 #define _IEEE_ fdlibm_ieee 70 #define _SVID_ fdlibm_svid 71 #define _XOPEN_ fdlibm_xopen 72 #define _POSIX_ fdlibm_posix 73 74 #ifndef __cplusplus 75 struct exception { 76 int type; 77 char *name; 78 double arg1; 79 double arg2; 80 double retval; 81 }; 82 #endif 83 84 #define HUGE MAXFLOAT 85 86 /* 87 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 88 * (one may replace the following line by "#include <values.h>") 89 */ 90 91 #define X_TLOSS 1.41484755040568800000e+16 92 93 #define DOMAIN 1 94 #define SING 2 95 #define OVERFLOW 3 96 #define UNDERFLOW 4 97 #define TLOSS 5 98 #define PLOSS 6 99 100 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 101 102 103 #include <sys/cdefs.h> 104 __BEGIN_DECLS 105 /* 106 * ANSI/POSIX 107 */ 108 extern double acos __P((double)); 109 extern double asin __P((double)); 110 extern double atan __P((double)); 111 extern double atan2 __P((double, double)); 112 extern double cos __P((double)); 113 extern double sin __P((double)); 114 extern double tan __P((double)); 115 116 extern double cosh __P((double)); 117 extern double sinh __P((double)); 118 extern double tanh __P((double)); 119 120 extern double exp __P((double)); 121 extern double frexp __P((double, int *)); 122 extern double ldexp __P((double, int)); 123 extern double log __P((double)); 124 extern double log10 __P((double)); 125 extern double modf __P((double, double *)); 126 127 extern double pow __P((double, double)); 128 extern double sqrt __P((double)); 129 130 extern double ceil __P((double)); 131 extern double fabs __P((double)); 132 extern double floor __P((double)); 133 extern double fmod __P((double, double)); 134 135 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \ 136 defined(_XOPEN_SOURCE) 137 extern double erf __P((double)); 138 extern double erfc __P((double)); 139 extern double gamma __P((double)); 140 extern double hypot __P((double, double)); 141 extern int isnan __P((double)); 142 extern int finite __P((double)); 143 extern double j0 __P((double)); 144 extern double j1 __P((double)); 145 extern double jn __P((int, double)); 146 extern double lgamma __P((double)); 147 extern double y0 __P((double)); 148 extern double y1 __P((double)); 149 extern double yn __P((int, double)); 150 151 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500 152 extern double acosh __P((double)); 153 extern double asinh __P((double)); 154 extern double atanh __P((double)); 155 extern double cbrt __P((double)); 156 extern double expm1 __P((double)); 157 extern int ilogb __P((double)); 158 extern double log1p __P((double)); 159 extern double logb __P((double)); 160 extern double nextafter __P((double, double)); 161 extern double remainder __P((double, double)); 162 extern double rint __P((double)); 163 extern double scalb __P((double, double)); 164 #endif /* !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500 */ 165 #endif /* !_ANSI_SOURCE) && !_POSIX_C_SOURCE || _XOPEN_SOURCE */ 166 167 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 168 !defined(_XOPEN_SOURCE) 169 #ifndef __cplusplus 170 extern int matherr __P((struct exception *)); 171 #endif 172 173 /* 174 * IEEE Test Vector 175 */ 176 extern double significand __P((double)); 177 178 /* 179 * Functions callable from C, intended to support IEEE arithmetic. 180 */ 181 extern double copysign __P((double, double)); 182 extern double scalbn __P((double, int)); 183 184 /* 185 * BSD math library entry points 186 */ 187 extern double cabs __P((/* struct complex { double r; double i; } */)); 188 extern double drem __P((double, double)); 189 190 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 191 192 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 193 !defined(_XOPEN_SOURCE) || defined(_REENTRANT) 194 /* 195 * Reentrant version of gamma & lgamma; passes signgam back by reference 196 * as the second argument; user must allocate space for signgam. 197 */ 198 extern double gamma_r __P((double, int *)); 199 extern double lgamma_r __P((double, int *)); 200 #endif /* !... || _REENTRANT */ 201 202 203 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 204 !defined(_XOPEN_SOURCE) 205 extern int isinf __P((double)); 206 207 /* float versions of ANSI/POSIX functions */ 208 extern float acosf __P((float)); 209 extern float asinf __P((float)); 210 extern float atanf __P((float)); 211 extern float atan2f __P((float, float)); 212 extern float cosf __P((float)); 213 extern float sinf __P((float)); 214 extern float tanf __P((float)); 215 216 extern float coshf __P((float)); 217 extern float sinhf __P((float)); 218 extern float tanhf __P((float)); 219 220 extern float expf __P((float)); 221 extern float frexpf __P((float, int *)); 222 extern float ldexpf __P((float, int)); 223 extern float logf __P((float)); 224 extern float log10f __P((float)); 225 extern float modff __P((float, float *)); 226 227 extern float powf __P((float, float)); 228 extern float sqrtf __P((float)); 229 230 extern float ceilf __P((float)); 231 extern float fabsf __P((float)); 232 extern float floorf __P((float)); 233 extern float fmodf __P((float, float)); 234 235 extern float erff __P((float)); 236 extern float erfcf __P((float)); 237 extern float gammaf __P((float)); 238 extern float hypotf __P((float, float)); 239 extern int isinff __P((float)); 240 extern int isnanf __P((float)); 241 extern int finitef __P((float)); 242 extern float j0f __P((float)); 243 extern float j1f __P((float)); 244 extern float jnf __P((int, float)); 245 extern float lgammaf __P((float)); 246 extern float y0f __P((float)); 247 extern float y1f __P((float)); 248 extern float ynf __P((int, float)); 249 250 extern float acoshf __P((float)); 251 extern float asinhf __P((float)); 252 extern float atanhf __P((float)); 253 extern float cbrtf __P((float)); 254 extern float logbf __P((float)); 255 extern float nextafterf __P((float, float)); 256 extern float remainderf __P((float, float)); 257 extern float scalbf __P((float, float)); 258 259 /* 260 * float version of IEEE Test Vector 261 */ 262 extern float significandf __P((float)); 263 264 /* 265 * Float versions of functions callable from C, intended to support 266 * IEEE arithmetic. 267 */ 268 extern float copysignf __P((float, float)); 269 extern int ilogbf __P((float)); 270 extern float rintf __P((float)); 271 extern float scalbnf __P((float, int)); 272 273 /* 274 * float versions of BSD math library entry points 275 */ 276 extern float cabsf __P((/* struct complex { float r; float i; } */)); 277 extern float dremf __P((float, float)); 278 extern float expm1f __P((float)); 279 extern float log1pf __P((float)); 280 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 281 282 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 283 !defined(_XOPEN_SOURCE) || defined(_REENTRANT) 284 /* 285 * Float versions of reentrant version of gamma & lgamma; passes 286 * signgam back by reference as the second argument; user must 287 * allocate space for signgam. 288 */ 289 extern float gammaf_r __P((float, int *)); 290 extern float lgammaf_r __P((float, int *)); 291 #endif /* !... || _REENTRANT */ 292 293 __END_DECLS 294 295 #endif /* _MATH_H_ */ 296
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